Recovering Alcoholic

My boyfriend recently discovered he had a drinking problem and by trying to avoid losing me stopped drinking completely.
He hasn't had a drop of alcohol in over 2 months, and he refuses to go to AA.
I have noticed him depressed and we no longer sleep together.
All his friends are alcoholics and they cocnstantly tease him for not drinking, so when he is with me, I feel like he recents me. Despite the fact that I wasn't the one who asked him to stop drinking. The only thing I said was that I loved myself too much to be with someone who is constantly trying to put me down when he drinks.
I feel bad for him cause I understand it might have been difficult to realize your entire life was alcohol. That your friends only like you cause you have money to drink. That you don't have hobbies cause all you do is drink. I understand, it is not easy.

How can I help him during this transition?